Detachable adjustable mouth mask

ABSTRACT

A detachable adjustable mouth mask includes a base frame member, a shade fastened to the base frame member to provide a curved, surface for covering over the user&#39;s mouth and nose, a chin support connector providing a clamping groove and friction ribs for fastening to the base frame member and lugs with radial teeth, a chin support providing connection members pivotally coupled to the lugs of the chin support connector with radial teeth thereof angularly adjustably engaged with the radial teeth of the chin support connector and a spacer block providing a ventilation passage for exhaust of exhaled air, and a pair of ear loops for securing the chin support to the user&#39;s ears.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a mask means for covering over themouth and nose of a person to prevent spit flying and more particularly,to a detachable adjustable mouth mask, which allows adjustment of theelevation and tilting angle of the chin support and quick replacement ofthe shade.

2. Description of the Related Art

Many detachable adjustable mouth masks are commercially available forwearing by a person to prevent spit flying. According to conventionaldesigns, the shade and chin support are arranged on one same axis.However, as the chin shape and length and the distance between the chinand the nose vary widely between people, the shade may be kept in closecontact with the user's mouth and nose, affecting the user's speechclarity. In this case, the user's eyeglasses may fog up, interferingwith the user's sight and breathing smoothness.

SUMMARY OF THE INVENTION

The present invention has been accomplished under the circumstances inview. It is one object of the present invention to provide a detachableadjustable mouth mask consisting of a base frame member, a shade, a chinsupport, a chin support connector and a pair of ear loops, wherein thechin support connector comprises a clamping groove for detachablysecuring the base frame member for allowing replacement of the shade.

Further, the chin support connector comprises two lugs each defining apivot hole; the chin support comprises two connection members eachcomprising a pivot pin. By means of coupling the pivot pins of theconnection members of the chin support to the pivot holes of the lugs ofthe chin support connector, the chin support and the chin supportconnector are pivotally coupled together, allowing adjustment of therelative angular position between the chin support and the chin supportconnector.

Further, the chin support comprises two extension arms symmetricallyextended from two opposite lateral sides thereof; the ear loops arerespectively connected to the distal ends of the extension arms forhanging on the user's ears without interfering with angular adjustmentbetween the chin support and the chin support connector.

Further, the chin support comprises a spacer block that defines with thechin support connector a ventilation passage for exhaust of exhaled airdownwardly and rapidly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of as detachable adjustable mouth mask inaccordance with a first embodiment of the present invention.

FIG. 2 is a schematic sectional assembly view of the detachableadjustable mouth mask in accordance with the first embodiment of thepresent invention.

FIG. 3 is a perspective assembly view of the detachable adjustable mouthmask in accordance with the first embodiment of the present invention.

FIG. 4 is an exploded view of a detachable adjustable mouth mask inaccordance with a second embodiment of the present invention.

FIG. 5 is a perspective assembly view of the detachable adjustable mouthmask in accordance with the second embodiment of the present invention.

FIG. 6 is an exploded view of a detachable adjustable mouth mask inaccordance with a third embodiment of the present invention.

FIG. 7 is an enlarged view of a part of FIG. 6.

FIG. 8 is a schematic sectional assembly view of the detachableadjustable mouth mask in accordance with the third embodiment of thepresent invention.

FIG. 9 is a perspective assembly view of the detachable adjustable mouthmask in accordance with the third embodiment of the present invention.

FIG. 10 is an exploded view of an alternate form of the detachableadjustable mouth mask in accordance with the third embodiment of thepresent invention.

FIG. 11 is an exploded view of a detachable adjustable mouth mask inaccordance with a fourth embodiment of the present invention.

FIG. 12 is a schematic sectional assembly view of the detachableadjustable mouth mask in accordance with the fourth embodiment of thepresent invention.

FIG. 13 is a perspective assembly view of the detachable adjustablemouth mask in accordance with the fourth embodiment of the presentinvention.

FIG. 14 is an exploded view of an alternate form of the detachableadjustable mouth mask in accordance with the fourth embodiment of thepresent invention.

FIG. 15 is an exploded view of a detachable adjustable mouth mask inaccordance with a fifth embodiment of the present invention.

FIG. 16 is a perspective assembly view of the detachable adjustablemouth mask in accordance with the fifth embodiment of the presentinvention.

FIG. 17 is an enlarged view of a part of FIG. 16, illustrating thestructure of the receptacle of the chin support.

FIG. 18 is an exploded view of a detachable adjustable mouth mask inaccordance with a sixth embodiment of the present invention.

FIG. 18-1 is an exploded view of a detachable adjustable mouth mask inaccordance with a seventh embodiment of the present invention.

FIG. 19 is a perspective assembly view of the detachable adjustablemouth mask in accordance with the sixth embodiment of the presentinvention.

FIG. 20 is an exploded view of a detachable adjustable mouth mask inaccordance with an eighth embodiment of the present invention.

FIG. 21 corresponds to FIG. 20, illustrating the shade fastened to thebase frame member.

FIG. 22 is an enlarged view of a part of FIG. 20, illustrating therelationship between the coupling hole of the shade and the respectivelug of the base frame member.

FIG. 23 is a schematic sectional view of a part of the eight embodimentof the present invention, illustrating the coupling holes of the shadecoupled to the necks of the lugs of the base frame member.

FIG. 24 is an exploded view of a detachable adjustable mouth mask inaccordance with a ninth embodiment of the present invention.

FIG. 25 is a perspective assembly view of the detachable adjustablemouth mask in accordance with the ninth embodiment of the presentinvention.

FIG. 26 is an enlarged view of a part of FIG. 24, illustrating therelationship between the coupling hole of the shade and the respectiveround head stud of the base frame member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1, 2 and 3, a detachable adjustable mouth mask inaccordance with a first embodiment of the present invention is showncomprising a base frame member 2, a chin support connector 1, a shade 4,a chin support 3, and a pair of ear loops 35.

The base frame member 2 is smoothly arched to fit the curvature of ahuman face, comprising a thin wall portion 22 on the middle. The shade 4has the bottom side thereof fastened to the base frame member 2, formingwith the base frame member 2 a curved surface. The chin supportconnector 1 is detachably fastened to the thin wall portion 22 of thebase frame member 2 to hold the chin support 3, allowing replacement ofthe shade 4. The chin support connector 1 comprises a clamping groove 12detachably fastened to the thin wall portion 22, a plurality of frictionribs 121 disposed in the clamping groove 12 to enhance friction betweenthe inside wall of the chin support connector 1 and the thin wallportion 22 of the base frame member 2, and a pair of lugs 11 protrudedfrom an inner wall thereof. Each lug 11 comprises a pivot hole 111 and aplurality of teeth 112 radially disposed at one side thereof around thepivot hole 111.

The chin support 3 comprises a pair of connection members 31respectively disposed at the two distal ends of the top side thereof andrespectively pivotally connected to the lugs 11 of the chin supportconnector 1. Each connection member 31 comprises a pivot pin 311pivotally connected to the pivot hole 111 of one respective lug 11 ofthe chin support connector 1, and a plurality of teeth 312 radiallydisposed at one side thereof around the pivot pin 311 and engaged withthe teeth 112 of the respective lug 11 of the chin support connector 1.The chin support 3 further comprises a spacer block 33 located on theinner side thereof for direct contact with the user's chin to keep theshade 4 away from the user's mouth and nose at a distance. Subject tothe connection between the pivot pins 311 of the connection members 31of the chin support 3 and the pivot holes 111 of the lugs 11 of the chinsupport connector 1, the chin support 3 can be biased forwards orbackwards relative to the base frame member 2 to the desired tiltingangle. The chin support 3 further comprises two extension arms 34symmetrically extended from two opposite lateral sides thereof. Further,the ear loops 35 are respectively connected to the distal ends of theextension arms 34 of the chin support 3 for hanging on the user's ears.Further, subject to the engagement structure between the teeth 112 ofthe lugs 11 of the chin support connector 1 and the teeth 312 of theconnection members 31 of the chin support 3, the chin support 3 can bequickly secured in position after angular adjustment relative to thebase frame member 2. Further, a ventilation passage 331 is definedbetween the spacer block 33 of the chin support 3 and the base framemember 2 for exhaust of exhaled air downwardly and rapidly. Further, theshade 4 has a top notch 41 for ventilation, avoiding accumulation ofbreathing hot air inside the shade 4 and enhancing wearing comfort.

FIGS. 4 and 5 illustrate a detachable adjustable mouth mask inaccordance with a second embodiment of the present invention. Thissecond embodiment is substantially similar to the aforesaid firstembodiment with the exception that the chin support connector is formedintegral with a part of the base frame member, i.e., the base framemember 2 comprises two lugs 21 located on an inner side of a middle partthereof and kept apart at a distance. Each lug 21 comprises a pivot hole211 to pivotally coupled to the pivot pin 311 of one respectiveconnection member 31 of the chin support 3, and a plurality of teeth 212radially disposed at one side thereof around the pivot hole 211 forengagement with the teeth 312 of one respective connection member 31 ofthe chin support 3.

FIGS. 6-9 illustrate a detachable adjustable mouth mask in accordancewith a third embodiment of the present invention. According to thisthird embodiment, the detachable adjustable mouth mask comprises a baseframe member 2, a chin support connector 1, a shade 4, a chin support 3,and a pair of ear loops 35.

The base frame member 2 is smoothly arched to fit the curvature of ahuman face, comprising a thin wall portion 22 on the middle. The shade 4has the bottom side thereof fastened to the base frame member 2, formingwith the base frame member 2 a curved surface. The chin supportconnector 1 is detachably fastened to the thin wall portion 22 of thebase frame member 2 to hold the chin support 3, allowing replacement ofthe shade 4. The chin support connector 1 comprises a clamping groove 12detachably fastened to the thin wall portion 22, a plurality of frictionribs 121 disposed in the clamping groove 12 to enhance friction betweenthe inside wall of the chin support connector 1 and the thin wallportion 22 of the base frame member 2, and two round head studs 13protruded from an inner wall thereof. Each round head stud 13 has around head stud 131.

The chin support 3 comprises a pair of connection members 32respectively disposed at the two distal ends of the top side thereof andrespectively pivotally connected to the round head studs 13 of the chinsupport connector 1. Each connection member 32 comprises a ball socket322 coupled to one respective round head stud 13 of the chin supportconnector 1, and a plurality of slits 321 cut through the peripheralwall of the ball socket 322 to enhance the elasticity of the ball socket322. The chin support 3 further comprises a spacer block 33 located onthe inner side thereof for direct contact with the user's chin to keepthe shade 4 away from the user's mouth and nose at a distance, and twoextension arms 34 symmetrically extended from two opposite lateral sidesthereof. Further, the ear loops 35 are respectively connected to thedistal ends of the extension arms 34 of the chin support 3 for hangingon the user's ears. Subject to the connection structure between the ballsockets 322 of the connection members 32 of the chin support 3 and theround head studs 13 of the chin support connector 1 and the design ofthe slits 321 of the ball sockets 322 of the connection members 32 ofthe chin support 3, the chin support 3 can be biased relative to thebase frame member 2 to the desired tilting angle. Further, a ventilationpassage 331 is defined between the spacer block 33 of the chin support 3and the base frame member 2 for exhaust of exhaled air downwardly andrapidly. Further, the shade 4 has a top notch 41 for ventilation,avoiding accumulation of breathing hot air inside the shade 4 andenhancing wearing comfort. Further, as an alternate form of this thirdembodiment, the chin support connector 1 can be configured to provideonly one single round head stud 13 on the middle, and the chin support 3can be configured to provide only one single connection member 32 forconnection with the single round head stud 13 of the chin supportconnector 1, as shown in FIG. 10.

FIGS. 11, 12 and 13 illustrate a detachable adjustable mouth mask inaccordance with a fourth embodiment of the present invention. Thisfourth embodiment is substantially similar to the aforesaid thirdembodiment with the exception that the chin support connector is formedintegral with a part of the base frame member, i.e., the base framemember 2 of the detachable adjustable mouth mask in accordance with thisfourth embodiment comprises two round head studs 13 located on an innerside of a middle part thereof and kept apart at a distance andrespectively detachably connected to the ball sockets 322 of theconnection members 32 of the chin support 3. Subject to the connectionstructure between the ball sockets 322 of the connection members 32 ofthe chin support 3 and the round head studs 13 of the base frame member2 and the design of the slits 321 of the ball sockets 322 of theconnection members 32 of the chin support 3, the chin support 3 can bebiased relative to the base frame member 2 to the desired tilting angle.Further, as an alternate form of this fourth embodiment, the base framemember 2 can be configured to provide only one single round head stud 13on the middle, and the chin support 3 can be configured to provide onlyone single connection member 32 for connection with the single roundhead stud 13 of the base frame member 2, as shown in FIG. 14.

FIGS. 15 and 16 illustrate a detachable adjustable mouth mask inaccordance with a fifth embodiment of the present invention. Accordingto this fifth embodiment, the detachable adjustable mouth mask comprisesa base frame member 5, a shade 6, a chin support 7, and a pair of earloops 53. The base frame member 5 is smoothly arched to fit thecurvature of a human face, comprising two plug rods 51 extended from theinner wall of the middle part thereof and kept apart at a predetermineddistance and two clamping plates 52 respectively extended from the innerwall near the two distal ends thereof. Each clamping plate 52 defineswith the inner wall of the base frame member 5 a clamping groove 521.Further, each clamping plate 52 comprises a plurality of friction ribs522 disposed in the clamping groove 521. The chin support 7 comprisestwo receptacles 71 corresponding to the plug rods 51 of the base framemember 5. Each receptacle 71 comprises a plug hole 72 for receiving onerespective plug rod 51 of the base frame member 5, and a plurality offriction ribs 721 disposed in the plug hole 72 to enhance frictionbetween the inserted plug rod 51 and the respective receptacle 71 (seeFIG. 17). The shade 6 comprises two through holes 61 disposed adjacentto the bottom side 621 thereof and respectively coupled to the two plugrods 51 of the base frame member 5, and two opposing end protrusions 62respectively engaged into the clamping grooves 521 of the clampingplates 52 of the base frame member 5 and kept in friction engagementwith the friction ribs 522. After the base frame member 5 and the shade6 are assembled, the plug rods 51 of the base frame member 5 arepress-fitted into the plug holes 72 of the receptacles 71 of the chinsupport 7 in friction engagement with the friction ribs 721. Thus, thebase frame member 5, the shade 6 and the chin support 7 can beconveniently and detachably assembled, allowing replacement of the shade6. Further, the ear loops 53 are respectively connected to the distalends of the base frame member 5 for hanging on the user's ears. The chinsupport 7 further comprises a spacer block 73 located on the inner sidethereof for direct contact with the user's chin to keep the shade 6 awayfrom the user's mouth and nose at a distance.

FIGS. 18 and 19 illustrate a detachable adjustable mouth mask inaccordance with a sixth embodiment of the present invention. This sixthembodiment is substantially similar to the aforesaid fifth embodimentwith the exception that two notches 611 are made on the bottom side 621of the shade 6 instead of the aforesaid through holes 61; the base framemember 5 further comprises an extra clamping plate 54 extended from theinner wall on the middle between the two plug rods 51 for clamping themiddle part of the bottom side 621 of the shade 6. This extra clampingplate 54 defines with the inner wall of the base frame member 5 aclamping groove 541. Further, this extra clamping plate 54 comprises aplurality of friction ribs 542 disposed in the clamping groove 541.

FIG. 18-1 illustrates a detachable adjustable mouth mask in accordancewith a seventh embodiment of the present invention. This seventhembodiment is substantially similar to the aforesaid sixth embodimentwith the exception that the base frame member 5 eliminates the aforesaidclamping plates 52;54. During installation of this seventh embodiment,the notches 611 of the shade 6 are respectively attached to the plug,rods 51 of the base frame member 5, and then the shade 6 is bonded tothe inner wall of the base frame member 5 using an adhesive orhigh-frequency sealing technology, and then the plug rods 51 of the baseframe member 5 are respectively detachably press-fitted into thereceptacles 71 of the chin support 7.

FIGS. 20-23 illustrate a detachable adjustable mouth mask in accordancewith an eighth embodiment of the present invention. According to thiseighth embodiment, the detachable adjustable mouth mask comprises a baseframe member 8, a shade 6, a chin support 9, and a pair of ear loops 95.The base frame member 8 is smoothly arched to fit the curvature of ahuman face, comprising two clamping plates 82 inwardly extended from twodistal ends thereof, one supplementary clamping plate 84 extended fromthe inner wall thereof on the middle, and two lugs 81 extended from theinner wall at two opposite lateral sides relative to the supplementaryclamping plate 84. The clamping plates 82;84 each comprises a clampinggroove 821;841, and a plurality of friction ribs 822;842 disposed in theclamping groove 821;841. Each lug 81 comprises a pivot hole 811, aplurality of teeth 812 radially disposed at one side thereof around thepivot hole 811, a neck 813 connected to the inner wall of the base framemember 8, and a collar 814 extending around the periphery of the neck813. The distance between the collar 814 of the lug 81 and the innerwall of the base frame member 8 is equal to the wall thickness of theshade 6. The shade 6 comprises two end protrusions 62 extended from thetwo distal ends of the bottom side 621 thereof, and two coupling holes612 located on the bottom side 621 corresponding to the lugs 81 of thebase frame member 8. Each coupling hole 612 defines a narrow bottomentrance 613. The chin support 9 comprises two connection members 91,two extension arms 94 respectively extended from two opposite sidesthereof, and a spacer block 93 located on the inner side thereof fordirect contact with the user's chin to keep the shade 6 away from theuser's mouth and nose at a distance. Each connection member 91 comprisesa pivot pin 911, and a plurality of teeth 912 radially disposed at oneside thereof around the pivot pin 911. By means of the narrow bottomentrance 613 of each coupling hole 612, the shade 6 is inserted into theclamping grooves 821;841 of the clamping plates 82;84 and the gapbetween the collar 814 of each lug 81 and the inner wall of the baseframe member 8 and secured to the base frame member 8. The narrow bottomentrance 613 of each coupling hole 612 of the shade 6 can be expandedfor allowing the neck 813 of the respective lug 81 of the base framemember 8 to be engaged into the respective coupling hole 612. Afterinsertion of the respective lug 81 of the base frame member 8 into therespective coupling hole 612, the narrow bottom entrance 613 immediatelyreturns to its former shape subject to the elastic material property ofthe shade 6. By means of inserting the pivot pins 911 of the connectionmembers 91 into the pivot holes 811 of the lugs 81, the chin support 9is coupled to the base frame member 8, and can be adjusted to thedesired tilting angle and then secured in the adjusted position byengagement between the teeth 812;912.

Referring to FIGS. 24-26 illustrate detachable adjustable mouth mask inaccordance with a ninth embodiment of the present invention. This ninthembodiment is substantially similar to the aforesaid eighth embodimentshown in FIGS. 20-23 with the exception that two round head studs 83 areprovided at the base frame member 8 to substitute for the aforesaid lugs81 protruded from an inner wall thereof, each round head stud 83 havinga neck 813 connected to the inner wall of the base frame member 8 and acollar 814 extending around the periphery of the neck 813; theconnection members 92 of the chin support 9 each comprise a ball socket922 coupled to one respective round head stud 83 of the base framemember 8, and a plurality of slits 921 cut through the peripheral wallof the ball socket 922 to enhance the elasticity of the ball socket 922.

Although particular embodiments of the invention have been described indetail for purposes of illustration, various modifications andenhancements may be made without departing from the spirit and scope ofthe invention. Accordingly, the invention is not to be limited except asby the appended claims.

What the invention claimed is:
 1. A detachable adjustable mouth mask,comprising a base frame member, a shade, a chin support, a chin supportconnector, and a pair of ear loops, wherein said base frame member isconfigured to fit the curvature of a human face; said shade comprises abottom side fastened to said base frame member such that said shadedefines with said base frame member a curved surface; said chin supportconnector is detachably fastened to a middle part of said base framemember, comprising a clamping groove for securing said base framemember, a plurality of friction ribs disposed in said clamping groovefor friction engagement. with said base frame member, and at least oneconnection member; said chin support comprises at least one connectionmember respectively and angularly adjustably connected to the at leastone connection member of said chin support connector, and two extensionarms respectively extended from two opposite lateral sides thereof; saidear loops are respectively connected to said extension arms of said chinsupport for hanging on the ears of a person.
 2. The detachableadjustable mouth mask as claimed in claim 1, wherein each connectionmember of said chin support connector comprises a lug, and a pivot holelocated on said lug; each connection member of said chin supportcomprises a pivot pin pivotally coupled to the pivot hole of onerespective connection member of said chin support connector.
 3. Thedetachable adjustable mouth mask as claimed in claim 1, wherein eachconnection member of said chin support connector comprises a round headstud having a round head; each connection member of said chin supportcomprises a ball socket pivotally coupled to the round head of the roundhead stud of one respective connection member of said chin supportconnector, and a plurality of slits located on said ball socket.
 4. Thedetachable adjustable mouth mask as claimed in claim 1, wherein saidbase frame member comprises a thin wall portion located on a middle partthereof and inserted into said clamping groove of said chin supportconnector in friction engagement with said friction ribs.
 5. Thedetachable adjustable mouth mask as claimed in claim 1, wherein saidchin support comprises a spacer block located on an inner side thereoffor direct contact with the user's chin to keep said shade away from theuser's mouth and nose at a distance, said spacer block defining withsaid chin support connector and said base frame member a ventilationpassage for exhaust of exhaled air.
 6. The detachable adjustable mouthmask as claimed in claim 1, wherein said chin support comprises a spacerblock located on an inner side thereof for direct contact with theuser's chin to keep said shade away from the user's mouth and nose at adistance, said spacer block defining with said chin support connectorand said base frame member a ventilation passage for exhaust of exhaledair.
 7. The detachable adjustable mouth mask as claimed in claim 2,wherein each connection member of said chin support connector furthercomprises a plurality of teeth radially located on one side of the lugthereof around the associating pivot hole; each connection member ofsaid chin support further comprises a plurality of teeth radiallylocated on one side around the pivot pin thereof for engagement with theteeth of the respective connection member of said chin support connectorin a detachable manner.
 8. A detachable adjustable mouth mask,comprising a base frame member, a shade, a chin support, and a pair ofear loops wherein said base frame member is configured to fit thecurvature of a human face, comprising a plurality of lugs extended froman inner side thereof and a pivot hole located on each said lug; saidshade comprises a bottom side fastened to said base frame member suchthat said shade defines with said base frame member a curved surface;said chin support comprises a plurality of connection members, each saidconnection member comprising a pivot pin pivotally coupled to the pivothole on one lug or said base frame member, and two extension armsrespectively extended from two opposite lateral sides thereof; said earloops are respectively connected to said extension arms of said chinsupport for hanging on the ears of a person.
 9. The detachableadjustable mouth mask as claimed in claim 8, wherein each said lug ofsaid base frame member comprises a plurality of teeth radially locatedon one side thereof around the associating pivot hole; each connectionmember of said chin support further comprises a plurality of teethradially located on one side around the pivot pin thereof for engagementwith the teeth of the respective lug of said base frame member in adetachable manner.
 10. The detachable adjustable mouth mask as claimedin claim 8, wherein said chin support comprises a spacer block locatedon an inner side thereof for direct contact with the user's chin to keepsaid shade away from the user's mouth and nose at a distance, saidspacer block defining with said base frame member a ventilation passagefor exhaust of exhaled air.
 11. A detachable adjustable mouth mask,comprising a base frame member, a shade, a chin support, and a pair ofear loops, wherein said base frame member is configured to fit thecurvature of a human face, comprising two clamping plates extended fromtwo distal ends of an inner side thereof and a plurality of plug rodsextended from the inner side and spaced between said two clampingplates, each said clamping plate comprising a clamping groove and aplurality of friction ribs disposed in said clamping groove; said shadecomprises two end protrusions respectively extended from two distal endsof a bottom side thereof and respectively inserted into the clampinggrooves of said clamping plates of said base frame member in frictionengagement with the friction ribs in said clamping grooves; said chinsupport comprises a plurality of connection members, each saidconnection member comprising a plug hole coupled to one respective plugrod of said base frame member, a plurality of friction ribs disposed insaid plug hole for friction engagement with the inserted plug rod ofsaid base frame member, and two extension arms respectively extendedfrom two opposite lateral sides thereof; said ear loops are respectivelyconnected to said extension arms of said chin support for hanging on theears of a person.
 12. The detachable adjustable mouth mask as claimed inclaim 11, wherein said shade comprises a plurality of through holesdisposed near the bottom side thereof and respectively coupled to theplug rods of said base frame member.
 13. The detachable adjustable mouthmask as claimed in claim 11, wherein said shade comprises a plurality ofbottom notches located on the bottom side thereof and respectivelyattached to the plug rods of said base frame member.
 14. The detachableadjustable mouth mask as claimed in claim 11, wherein said shade isselectively bonded to said base frame member using an adhesive orhigh-frequency sealing technology.
 15. The detachable adjustable mouthmask as claimed in claim 11, wherein said base frame member furthercomprises a supplementary clamping plate extended from the inner sidethereof on the middle, said supplementary clamping plate comprising aclamping groove for receiving the bottom side of said shade and aplurality of friction ribs disposed in the clamping groove for frictionengagement with the inserted bottom side of said shade.
 16. A detachableadjustable mouth mask, comprising a base frame member configured to fitthe curvature of a human face, a shade, a chin support and a pair of earloops, said base frame member comprising a plurality of lugs extendedfrom an inner side thereof, said chin support comprising a plurality ofconnection members respectively pivotally coupled to the lugs of saidbase frame member, said ear loops being respectively connected to saidchin support for hanging on the ears of a person, wherein said baseframe comprises two clamping plates respectively from two distal ends ofan inner side thereof, each said clamping plate comprising a clampinggroove and a plurality of friction ribs disposed in said clampinggroove, said shade comprises a plurality of coupling holes located on abottom side thereof and respectively coupled to the lugs of said baseframe member and two end protrusions respectively extended from twodistal ends of the bottom side and respectively inserted into theclamping grooves of said clamping plates of said base frame member infriction engagement with the friction ribs in said clamping grooves,each said coupling hole comprising a narrow bottom entrance elasticallyexpandable for allowing the respective lug of said base frame member tobe engaged into the respective said coupling hole.
 17. The detachableadjustable mouth mask as claimed in claim 16, wherein each saidconnection member of said chin support comprises a pivot pin pivotallycoupled to one respective said lug of said base frame member; each saidlug of said base frame member comprises a pivot hole pivotally coupledto the pivot pin of the respective connection member of said chinsupport, a neck connected to the inner side of said base frame member,and a collar extending around the periphery of the neck thereof forsupporting the bottom side of said shade on the inner side of said baseframe member, the distance between said collar and the inner side ofsaid base frame member being equal to the thickness of the bottom sideof said shade.
 18. The detachable adjustable mouth mask as claimed inclaim 16, wherein said chin support comprises two extension armsrespectively extended from two opposite lateral sides thereof; said earloops are respectively connected to said two extension arms of said chinsupport.
 19. The detachable adjustable mouth mask as claimed in claim17, wherein each said lug of said base frame member further comprises aplurality of teeth radially disposed at one side around the pivot holethereof; each said connection member of said chin support comprises aplurality of teeth radially disposed at one side around the pivot pinthereof for engagement with the teeth of the respective lug of said baseframe member.
 20. The detachable adjustable mouth mask as claimed inclaim 17, wherein said base frame member further comprises asupplementary clamping plate extended from the inner side thereof on themiddle between said lugs said supplementary clamping plate comprising aclamping groove for receiving the bottom side of said shade and aplurality of friction ribs disposed in the clamping groove for frictionengagement with the inserted bottom side of said shade.
 21. Thedetachable adjustable mouth mask as claimed in claim 17, wherein eachsaid lug of said base frame member is made in the form of a round headstud, said round head stud comprising a round head and a neck connectedbetween said round head and the inner side of said base frame member;said chin support comprises a plurality of connection members and twoextension arms respectively extended from two opposite lateral sidesthereof, each said connection member comprising a ball socket pivotallycoupled to the round head of one respective round head stud of said baseframe member to stop the bottom side of said shade against the innerside of said base frame member and a plurality of slits located on saidball socket; said two ear loops are respectively connected to saidextension arms of said chin support for hanging on the ears of a person.